Videos not playable after latest Readium update

I have MP4 videos embedded into my ePUB. Before the update, there were no issues. But after the recent update, the videos are either not playable at all or the videos stop playing by themselves before they reach the end.

These videos are encoded as MP4, with either a H264 codec or a AVC codec.

Are you playing these videos locally? As opposed to playing them from a remote server? Can you post those videos (plus EPUB) somewhere (e.g. dropbox) so we can take a look? You can reach me directly at rkwright@readium.org